week 4

Question 1

Quasi Experimental Design?

Answer 1

Has no Random Assignment, Comparison Group, or both

Question 2

One Group Designs?

Answer 2

• One group Pretest/Post Test
• One way Repeated Measure
• Time Series

Question 3

What is One group Pretest/Posttest Design?

Answer 3

Study Sample –> Pretest –> Intervention–> Posttest

Question 4

What is One way Repeated Measure Design?

Answer 4

1. Study Sample–> Pretest –> Intervention–> Posttest1–>Posttest2
2. Study Sample –> Pretest–> Intervention–> Posttest1–>Intervention–> Posttest2

Question 5

What are some concerns with One group Pretest/posttest and One way repeated measure

Answer 5

• Vulnerable to threats to internal validity

Question 6

When can you defend One group Pretest/posttest and One way repeated measure?

Answer 6

1. Previous Research has documented behavior

2. Follow up time frame is short

Question 7

What is a Time Series Design?

Answer 7

• Multiple pretests and posttests (pseudo-control)
• Has better internal validity than one group pretest/posttest
• Study Sample –> Prt1–>Prt2–>Prt3–>Intervention–>Pt1–>Pt2–>Pt3

Question 8

What are the multi-group designs?

Answer 8

1. Nonequivalent Pretest/Posttest control group and historical control
2. Nonequivalent Posttest only design

Question 9

What is Nonequivalent Pretest/Posttest control group and historical control?

Answer 9

• Has control group and pretest
• Tests equivalency based on prescores
• ethical concerns
• Experimental Group–> Pretest–>Intervention–> Posttest
  Control Group–> Prestest–> No Intervention–> Posttest

Question 10

What is Nonequivalent Posttest only design?

Answer 10

• Includes posttest but no pretest
• You cant test equivalency
• Experimental Group –>Intervention–>Posttest
  Control Group –> No Intervention –> Posttest